Paper box or the like



July 15, 1930.

s. BERGSTEIN PAPER BOX OR THE LIKE Filed March 12, 1928 AT o e/v51 Patented July 15, 1930 STATS OFFICE SAMUEL BERGSTEIN, OF MIDDLETOWN, OHIO PAPER BOX oR TnE LIKE Application filed March 12, 1928. Serial No. 261,000.

This invention relates to improvements in paper boxes.

In the accompanying drawings which serve for illustrating the invention:

Fig. 1 is a diagrammatic View of the box blank for the body of the box as out from the paper sheet:

Fig. 2 is a diagrammatic view of the blank for the lid of the box:

body of the box:

Fig. 4 is a detail View of an end of the lid. Fig. 5 is a detail view illustrating a modification.

An object attained in the invention consists in a paper box designed for minimizing the amount of material required in the construction of the box and for reducing the waste of material in cutting the box stock to negligible amount.

A further object attained in the improved box consists in severing opposite sealing flaps from the inner end flaps for reinforcing the body of the box by extending the 2 sealing flaps outwardly substantially beyond and downwardly from the upper edge of the box at the corners; thus effecting construction of great strength at the upper corners of the box with a relatively small amount of material. 7

The corner construction of the lid of the box is similar to that of the body except that the outer end flap is folded for eifecting dp ble thickness of material at the ends of the lid and the reinforcing flaps are extended inward and glued to the side walls of the lid. I

The structure of the body of the box, as

shown in Figs. 1 and 3, consists in the bottom 1, sides 2, outer end flaps 3, inner end flaps 4, reinforcing upper corner flaps-5, the latter together with the upper portion of the inner faces of flaps 3 being supplied with 45 adhesive as indicated at a for effecting a glued end and corner construction. For minimizing the amount of material required for constructing the box and the waste of material in cutting the box stock, the corner flaps 5 are cut from the lower corners of the Fig. 3 is a detail view of an end of the box.

semi-automatic box assembling machines free ends of flaps 3 as indicated at 6, thus without weakening the end construction.

The reinforced upper corner construction, as illustrated in Fig. 3 presents double thickness of material along the upper edges of the end and side walls of the box, thus giving added strength where it is most needed to prevent breaking or tearing of the material on the corner line which results in boxes of ordinary construction in handling the same incident to their use. It will be apparent that the flaps 5 may be made any desired length vertically, for extending the rein forcement any desired distance along the corners of the box; also that by slightly modifying the shape of flaps 5 the construction may be readily changed from the glued to the lock-flap type of box, as illustrated in Fig. 5 of thedrawings.

The lid of the box, as shown in Figs. 2 and 4:, consists of the top 7, sides 8, outer end fold 9, inner end fold 10, side end flaps 11, and corner reinforcing flaps 12, the latter together with the end portion 10 being supplied with adhesive as indicated at a for gluing parts 101112 and 8 together. The inward fold of the end portion 10 over parts 9 and 11 and extension of flaps 12 along the sides 8 results in an end and corner construction of the lid of relatively great strength, there being double thickness of material across the end, and double and treble thickness of material respectively on opposite sides adjacent the corners.

Any suitable means may be employed for constructing the boxes. For small quantity production simple hand operated presses will serve for assembling the several parts of the For large production automatic or willbe used, and machines adapted for simultaneously sealing the reinforced corners along both sides of the corner line will be preferred. The principle for such a machine is set forth in my copending application for patent filed March 12, 1928 for means and method for making paper boxes.

I claim as my invention:

A paper box including a portion comprising a bottom, opposite side Walls, end flaps attached to' the side Walls, and end walls at tached to said bottom including corner reinforcing flaps severed from adjacent corners of said end flaps, said reinforcing flaps being secured as the box is assembled to the side walls outward at the upper portions of the corners of the box With said end flaps inward of the end Walls and the vertical edges thereof in close proximity one with the other and the recesses formed by severing the corner reinforcing flaps therefrom adjacent the bottom of the box, efl ecting double Wall thickness of the ends of the box except as to the portions adjacent said recesses.

In testimony whereof, I aflix my signature.

SAMUEL BERGSTEIN. 

